The GeekVape Z Sub Ohm Tank Is A Special Edition Tank That Includes A Child Safety Lock To Address Your Concerns. What's more remarkable is that the new Z coils have twice the lifespan of regular coils. This Durable Master is now ready for you to enjoy up to 60ml of e-juice. GeekVape Z Sub Ohm Tank Features Childproof, Lock Z-Coil With Double Serviece Life Leakproof Top-Airflow... https://www.vapeuniverse.co/products/geekvape-z-se-sub-ohm-tank?pr_prod_strat=e5_desc&pr_rec_id=59fd686ca&pr_rec_pid=8189508878588&pr_ref_pid=7846693470460&pr_seq=uniform